IDEA configures the annotation template like this

class annotation

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Open IDEA's Settings, click Editor->File and Code Templates, click Class under the File tab on the right, and add
/** * @author liu to it

@date ${YEAR}$ {MONTH} month ${DAY} day ${TIME}
*/

Configure the interface

Same as above, select Interface configuration

method annotation

Automatically generate @param annotations
based on formal parameters Intelligently generate @Return annotations based on whether the method has a return value

1. First click on Editor->Live Templates in Settings.

Click the + on the far right, first select 2. Template Group… to create a template group
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, then select the template group customTemp just created, then click +, select 1. Live Template:

At this point, an empty template will be created, we modify The Abbreviation, Description, and Template text of the template. It should be noted that Abbreviation must be *, and finally check whether the value of Expand with is the Enter key.
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/* *

@author liu
@date $d a t e$ $t i m e$ $p a r a m$ $r e t u r n$
*/

Click Define and check Java in the pop-up box, which means that the template will be applied to all Java type files.
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set applicable contexts

to $The dat e parameters$ are used for method mapping, so that IDEA can understand the meaning of these parameters $.$ Click the Edit variables button:
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set the Expression

It should be noted that the Expressions of date and time use IDEA's built-in functions, you can directly use the drop-down box to select, and the default implementation of the param parameter IDEA is very poor, so we need to implement it manually, the code is as follows:

param

groovyScript(“def result = ‘’;def params = “${_1}”.replaceAll(‘[\\[|\\]|\\s]’, ‘’).split(‘,’).toList(); for(i = 0; i < params.size(); i++) {if(params[i] != ‘’)result+='* @param ’ + params[i] + ’ ’ +((i < params.size() - 1) ? '\r\n ’ : ‘’)}; return result == ‘’ ? null : result”, methodParameters())

return

groovyScript("def returnType = "${_1}"; def result ='';if(returnType=='null'||returnType=='void'){return;}else{result += '* @return' ;cls = returnType.split('<');for(i = 0; i < cls.size(); i++){temp = cls[i].tokenize('.');result += temp[temp. size() - 1] + ((i < cls.size() - 1) ? '<' : '');};return result + ' ';}", methodReturnType());
Don't forget to click " Apply" and "OK" to save the settings.